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2" x 1" Fig 1502 Plug Valve (LT - Low Torque) | Sour Service (H2S) | 10,000 PSI Flow Control
2" x 1" Fig 1502 Plug Valve (LT - Low Torque) | Sour Service (H2S) | 10,000 PSI Flow Control
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The 2" x 1" Figure 1502 Low Torque (LT) Plug Valve for Sour Service is a highly specialized flow control component engineered for precision fluid management in hazardous, hydrogen sulfide (H2S) rich upstream environments. This specific configuration features standard 2-inch Figure 1502 hammer union ends integrated with a restricted 1-inch internal bore. To strictly comply with safety standards for volatile H2S environments, this Figure 1502 component is explicitly derated to a highly secure 10,000 PSI Cold Working Pressure (10M CWP). This reduced-bore valve is essential for safely bleeding off toxic pressure, routing lower-volume corrosive fluids, and providing exact throttling control within a standard 2-inch sour manifold spread without the need for additional crossovers.
What strictly defines this plug valve is its NACE MR0175 / ISO 15156 compliant metallurgy. The premium forged alloy steel undergoes a rigorously controlled heat treatment process to limit material hardness, completely neutralizing the threat of Sulfide Stress Cracking (SSC) and hydrogen embrittlement common in sour gas applications. The internal sealing components are also upgraded, utilizing specialized, H2S-resistant elastomeric compounds designed to withstand aggressive chemical degradation.
Working in tandem with this rugged metallurgy is the highly efficient Low Torque (LT) internal architecture. Operating under extreme 10,000 PSI differential pressure can cause standard valves to bind. The LT design utilizes specialized high-strength bearings and floating seal segments to significantly reduce friction against the precision-ground cylindrical plug. This ensures that field operators can easily and smoothly open or close the line manually—even under maximum pressure—allowing for rapid, safe responses in hazardous sour environments.
Configured with standard Figure 1502 Male (Wing Nut) x Female (Thread) ends, this 2" x 1" sour service valve integrates seamlessly into high-pressure H2S well-testing layouts and choke manifolds, delivering dependable, fail-safe fluid isolation.
Features & Benefits
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10,000 PSI Sour Service Rating (10M): Specifically engineered and derated to safely manage extreme high-pressure H2S fluid systems with a 10,000 PSI Cold Working Pressure rating.
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NACE MR0175 Compliant: Manufactured with specially heat-treated, controlled-hardness alloy steel to prevent Sulfide Stress Cracking (SSC) in lethal sour gas environments.
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Low Torque (LT) Design: Advanced internal bearing and floating seal architecture radically reduces friction, ensuring smooth, non-stick manual operation under full load.
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2" x 1" Reduced Bore Profile: Combines standard 2" union connections with a 1" restricted bore, perfect for precise pressure bleed-off and lower-volume routing without requiring transition fittings.
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H2S-Resistant Sealing: Utilizes precision-machined metal-to-metal seats combined with resilient lip-type seals formulated specifically for sour gas chemical compatibility.
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Male x Female Connections: Features standard Fig 1502 hammer union ends for fast, highly secure integration into existing sour service flowline networks.
Specifications & Technical Details
| Category | Specification |
| Component Type | Manual Plug Valve – Sour Service |
| Internal Design | LT (Low Torque) |
| Union Figure Standard | Figure 1502 (Fig 1502) |
| Nominal Size | 2" x 1" (2" Connections, 1" Bore) |
| End Connections | Male (Wing) x Female (Thread) / M x F |
| Maximum Working Pressure | 10,000 PSI CWP (10M) – Sour Service Derated |
| Body Material | Controlled-Hardness Forged Alloy Steel (NACE Compliant) |
| Typical Applications | H2S pressure bleed-off lines, sour gas choke manifolds, toxic fluid sampling lines |
Applications
This high-pressure, reduced-bore sour service LT plug valve is an absolutely critical safety asset for operations where hydrogen sulfide (H2S) is present. It is ideally utilized as a bleed valve on sour fracturing manifolds, a precise control valve within H2S-rated choke-and-kill assemblies, a fluid sampling point in sour well-testing layouts, and any hazardous application where standard 2-inch iron is used but restricted 1-inch fluid flow and effortless manual operation are required.
Quality Assurance
Each sour service plug valve undergoes the most rigorous quality control protocols in the industry. This includes severe hydrostatic pressure testing of the body and seat under full load, torque testing to verify LT capabilities, magnetic particle inspection (MPI), and strictly documented Hardness Testing to verify NACE MR0175 compliance. Full material traceability (MTRs) is provided to guarantee fail-safe structural integrity.
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